Davi's code review | Python Fiddle

import json

def main():
    print("You are logged in!")

def login():
    print("Welcome to Password Generator, please sign in.")
    # See below. Name this something more descriptive or follow whatever existing convention: ---+
    #                                                                                            |
    #                               +------------------------------------------------------------+
    #                               |
    #                               v
    with open("info.json", "r") as x_read:
        reading = x_read.readlines()
        user = reading[0]
        pwd = reading[1]
        
        # If the contents of info.json is an actual json-encoded object, you can
        # load it as a native Python dict with:
        user_info = json.loads(x_read.read())
        
        # Now you can pull the values out of it with:
        pwd = user_info['secret']
        user = user_info['name']
        
        print(pwd)
        print(user)

username = input("Enter username? ")
        password = input("Enter password? ")
    if user.strip() == username and pwd.strip() == password:
        # See below. No need to close the file stream if you open it with "with".
        # However, check your scope. Here, you're outsite the "with" block,
        # so x_read is out of scope.
        x_read.close()
        main()
    else:
        print("Invalid Password! or Username!")
        exit()
        
    # If you want extra credit, rewrite the function that saves the user's password to
    # info.json, but don't store the password in plain text. Instead, try _hashing_
    # the password so that the user's sensitive information (the password) remains save
    # even if someone ill-meaning gets a hold of info.json.
    
    # For double extra credit: rewrite register() such that you can now save the
    # username and password for more than one user. This could be a good opportunity
    # to check if the provided username and/or email have already been registered.

def register():
    registered = input("Would you like to register (yes) or are you already a member (member)? ")

# 1. Convert whatever the input is to lowercase to simplify your conditionals
    registered = registered.lower()

if registered == "yes":
        
        # 2. A common convention is to name a file reference as either "reader" or "writer"
        #    depending on how you open the file. Here you had named it "x_append" ---+
        #                                                                            |
        #                                                +---------------------------+
        #                                                |
        #                                                v
        with open("info.json", "w", encoding="utf8") as writer:
            name = input("Username? ")
            writer.write(name + "\n")
            secret = input("Password? ")
            writer.write(secret + "\n")
            email = input("What's your email address? ")
            writer.write(email + "\n")
            
            # 3. Because writer exists within the contenxt of a "with" block, there's no
            #    need to explicitly close() it. The "with" block will close the file
            #    reference for you.
            writer.close()
            
        # 4. Again, by convention, you might want to name this variable "reader" instead
        #    of "x_read" because reader is more descriptive (and a convention).
        with open("info.json", "r") as reader:
            read = reader.readlines()
            print(read[0])
            print(read[1])
            
            # 5. Again, don't close a stream managed by "with".
            # reader.close()
            login()
            
       # Another thing... here you did two things: 1. wrote to a file 2. read from that
       # same file right after. What's the point of reading from the file right after you
       # wrote to it?
            
       # Also... the name of your file is "info.json". By convention, if the file extension
       # is .json, you would assume that the contents of the file are json-encoded. However,
       # here you just write two lines of text without ever json-encoding it. A better, more
       # conventional approach:

# A. Create a dict with empty values for the keys you want to store in your info.json file.
       user_info = {
           'name': None,
           'secret': None,
           'email': None,
       }
            
       # B. Get the input from the user, storing the input into the dict from the previous step.
       user_info['name'] = input("Username? ")
       user_info['secret'] = input("Password? ")
       user_info['email'] = input("What's your email address? ")
            
       # C. Save the dict as a json-encoded object. This way, when you load that object back into
       #    Python, the same structure can be loaded into memory again. That's much easier to
       #    parse than "first line, second line, etc..."
       with open('info.json', 'w') as writer:
            writer.write(json.dumps(user_info))
    elif registered == "member":
        login()
    else:
        print("No worries, thank you.")
        exit()

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